D13670: Add subseq operator to match sub-sequences

[Michael Eden]

michaeleden created this revision.
michaeleden added a reviewer: dfaure.
Restricted Application added a project: Frameworks.
Restricted Application added a subscriber: kde-frameworks-devel.
michaeleden requested review of this revision.

REVISION SUMMARY
  Added `subseq` and `~subseq` operators which match subsequences of strings.
  This is useful to filter out matches quicker:
  
    $ ktraderclient5 --constraint "'libremath' ~subseq Name" --servicetype 'Application' --short
    servicetype is : Application
    constraint is : 'libremath' ~subseq Name
    got 1 offers.
    /nix/store/zq1kgdxk426qgf06nzpd7xqkpk4z5hh2-system-path/share/applications/math.desktop

TEST PLAN
  I'll need help knowing where tests for this will go.

REPOSITORY
  R309 KService

BRANCH
  feature/match-subseq

REVISION DETAIL
  https://phabricator.kde.org/D13670

AFFECTED FILES
  src/services/ktraderparse.cpp
  src/services/ktraderparse_p.h
  src/services/ktraderparsetree.cpp
  src/services/ktraderparsetree_p.h
  src/services/lex.l
  src/services/yacc.y

To: michaeleden, dfaure
Cc: kde-frameworks-devel, michaelh, ngraham, bruns
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